Signature splitting of the g7/2[404]7/2+ bands in Ba131 and Ce133

Ding, B.; Petrache, C. M.; Guo, S.; Lawrie, E. A.; Wakudyanaye, I.; Zhang, Z. H.; Wang, H. L.; Meng, H. Y.; Mengoni, D.; Qiang, Y. H.; Wang, J. G.; Andreoiu, C.; Astier, A.; Avaa, A.; Bäck, T.; Bark, R. A.; Bazzacco, D.; Boso, A.; Bucher, T. D.; Cederwall, B.; Chisapi, M. V.; Fan, H. L.; Galtarossa, F.; Garcia, F. H.; Goasduff, A.; Jaworski, G.; Jones, P.; Kuti, I.; Lawrie, J. J.; Li, G. S.; Li, R.; Liu, M. L.; Liu, Z.; Lomberg, B.; Lv, B. F.; Marchlewski, T.; Mdletshe, L.; Msebi, L.; Mthembu, S. H.; Napoli, D. R.; Netshiya, A.; Nkalanga, M. F.; Orce, J. N.; Ortner, K.; Recchia, F.; Riccetto, S.; Rohilla, A.; Seakamela, T. W.; Siciliano, M.; Sithole, M. A.; Sohler, D.; Srebrny, J.; Testov, D.; Tucholski, A.; Valiente-Dobón, J. J.; Wentzel, F.; Whitmore, K.; Zhang, Y. H.; Zheng, K. K.; Zhou, X. H.; Zikhali, B. R.

doi:10.1103/physrevc.104.064304

Title: Signature splitting of the $g_{7 / 2} [404] {7 / 2}^{+}$ bands in ${}_{131}{Ba}$ and ${}_{133}{Ce}$

Journal Article · Thu Dec 09 00:00:00 EST 2021 · Physical Review C

DOI:https://doi.org/10.1103/physrevc.104.064304· OSTI ID:1838888

Ding, B. ^[1]; Petrache, C. M. ^[2]; Guo, S. ^[1]; Lawrie, E. A. ^[3]; Wakudyanaye, I. ^[4]; Zhang, Z. H. ^[5]; Wang, H. L. ^[6]; Meng, H. Y. ^[6]; Mengoni, D. ^[7]; Qiang, Y. H. ^[1]; Wang, J. G. ^[1]; Andreoiu, C. ^[8]; Astier, A. ^[2]; Avaa, A. ^[9]; Bäck, T. ^[10]; Bark, R. A.; Bazzacco, D. ^[7]; Boso, A. ^[7]; Bucher, T. D. ^[11]; Cederwall, B. ^[10] more »

Chinese Academy of Sciences, Lanzhou (China). Institute of Modern Physics; University of Chinese Academy of Sciences, Beijing (China)
Université Paris-Saclay, Orsay (France)
National Research Foundation, Somerset West (South Africa); Univ. of the Western Cape, Bellville (South Africa)
Univ. of the Western Cape, Bellville (South Africa); National Research Foundation, Somerset West (South Africa)
North China Electric Power University, Beijing (China)
Zhengzhou University (China)
Univ. degli Studi di Padova (Italy); Istituto Nazionale di Fisica Nucleare (INFN), Padova (Italy)
Simon Fraser Univ., Burnaby, BC (Canada)
Univ. of the Witwatersrand, Johannesburg (South Africa); National Research Foundation, Somerset West (South Africa)
KTH Royal Inst. of Technology, Stockholm (Sweden)
National Research Foundation, Somerset West (South Africa); Stellenbosch University (South Africa)
Stellenbosch University (South Africa); National Research Foundation, Somerset West (South Africa)
Chinese Academy of Sciences, Lanzhou (China). Institute of Modern Physics
National Inst. of Nuclear Physics (INFN), Legnaro (Italy); Univ. of Ferrara (Italy)
National Inst. of Nuclear Physics (INFN), Legnaro (Italy); Univ. of Warsaw (Poland)
National Research Foundation, Somerset West (South Africa)
Hungarian Academy of Sciences, Debrecen (Hungary). ATOMKI
Chinese Academy of Sciences, Lanzhou (China). Institute of Modern Physics; Université Paris-Saclay, Orsay (France)
Univ. of the Western Cape, Bellville (South Africa)
Univ. of Warsaw (Poland)
University of Zululand, Kwadlangezwa (South Africa); National Research Foundation, Somerset West (South Africa)
National Inst. of Nuclear Physics (INFN), Legnaro (Italy)
University of Johannesburg (South Africa); National Research Foundation, Somerset West (South Africa)
National Inst. of Nuclear Physics (INFN), Legnaro (Italy); Argonne National Lab. (ANL), Argonne, IL (United States)

Excited states in ${}_{131}{Ba}$ and ${}_{133}{Ce}$ were studied using in-beam $γ$ -ray spectroscopy through the ${}_{122}{Sn} ({}_{13}C, 4 n) {}_{131}{Ba}$ and ${}_{125}{Te} ({}_{12}C, 4 n) {}_{133}{Ce}$ reactions, respectively. A strongly coupled band, associated with the $ν g_{7 / 2} [404] {7 / 2}^{+}$ configuration, was identified in ${}_{131}{Ba}$ and ${}_{133}{Ce}$ . It is the first time to observe the $ν g_{7 / 2} [404] {7 / 2}^{+}$ bands in the $N = 75$ isotones. The signature partners exhibit considerable energy splitting in comparison with those in the $π g_{7 / 2} [404] {7 / 2}^{+}$ bands in the odd- $A$ Ta and Re isotopes. Here, extensive cranked shell model and quasiparticle-plus-triaxial-rotor model calculations reveal the origin of the signature splitting, which depends not only on the triaxiality, but also on the configuration mixing with nearby low- $j$ orbitals.

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Research Organization:: Argonne National Lab. (ANL), Argonne, IL (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Nuclear Physics (NP); National Natural Science Foundation of China (NSFC); National Research Development and Innovation Office of Hungary (NKFIH); European Regional Development Fund (ERDF); Polish National Science Centre (NCN); National Research Foundation (NRF) South Africa

Grant/Contract Number:: AC02-06CH11357; U2032144; 11975209; U1932137; U1732139; U1832134; 11805289; 11775274; 11575255; 41458XH; K128947; GINOP-2.3.3-15-2016-00034; PD-124717; 2017/25/B/ST2/01569; 2020/39/D/ST2/00466; 116666; 109134; 42417SE

OSTI ID:: 1838888

Journal Information:: Physical Review C, Vol. 104, Issue 6; ISSN 2469-9985

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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